Britain’s elite Special Air Service Regiment, the SAS, is one of the most revered and feared special-ops units in the world. Its high-profile operations include the spectacular storming of the Iranian Embassy in London on 5 May 1980 and the hunt for Osama bin Laden in southern Afghanistan following 9/11. The regiment has become a byword for the highest possible standards in both conventional and unorthodox methods of warfare. But where did it all begin? In this compelling book, Tim Jones tackles this fascinating question from a fresh perspective. It is commonly held that the regiment was the brainchild of just one man, David Stirling. While not dismissing Stirling s considerable contribution to the regiment s genesis, Jones s insightful investigation identifies all of the major factors that played a part in shaping the SAS, including the role of such notables as Dudley Clarke, Archibald Wavell and Claude Auchinleck, among others. Drawing extensively on primary sources, as well as reassessing the more recent regimental histories and memoirs, SAS Zero Hour is an illuminating and provocative account of how this renowned regiment came into being.